Improvement in brick-machines



J. 0. SEYMOUR & S. G. DAVIS.

BRICK-Mmmm.

NITED STATES PATENT EEIOE.

JOSEPH O. SEYMOUR AND SAMUEL Gr. DAVIS, OF BALTIMORE, MARYLAND,

AssIGNOEs OE AONE-THIRD OF JE., OE sAME PLAOE.

THEIR RIGHT TO JOHN W. LANCASTER,

IMPROVEMENT IN BRICK-MACHINES.

Specification forming part of Letters Patent No. 180,941 dated August 8,i876 application filed J une 16, 1876.

To all whom it may concern:

Be it known that we,JOsEP11 O. SEYMOUR and SAMUEL Gr. DAVIS, both of thecity of Baltimore, and State of Maryland, have invented certain new anduseful Improvements in Brick-Machines, of which the following is aspecification; Vand we do hereby declare that in the same is contained afull, clear, and exact description of our said invention, referencebeing had to the accompanying drawing, and to the letters of referencemarked thereon.

The machine incorporating our improvements, as hereinafter set forth,consists, broadly, in one in which tempered clay, placed in acylindrical chamber, is disintegrated and mixed by revolving cutters,and forced, by means of spiral revolving wings, through apertures in thebottom of the cylinder, and into suitable molds, which molds, whenfilled, are carried mechanically under rolls, and the clay subjected toa heavy pressure, for the purpose of increasing its density.

In the description of the above machine which follows, due referencemust be had to the accompanying drawing, forming a part of thisspecification, and in Which- Figure l is a longitudinal section of ourimproved machine, aud Fig. 2 an end view of the same.

Similar letters of reference indicate similar parts of the invention inboth views.

A is the clay cylinder, and B a shaft, adapted to rotate centrallythereof, in a vertical position. C C are cutters, secured to the shaft Bin such manner as to admit of their being placed at any desired angle,the means of attachment being cylindrical extensions of the cutterswhich pass through the shaft, and are secured by nuts. The shaft B isrevolved through the medium of the gear-wheels a, from a shaft, b,driven, preferably, by a belt and pulley. The clay-cylinder A rests upona bed-plate, D, elevatedtupon columns c, which bed-plate, in addition toits other uses, forms the step for the revoluble shaft B. The upper endof the shaft B passes through aplate, E, which supports the bearin gsfor the shaft b. F F are endless bands, running over pulleys d, andprovided with the cross-bars e, placed at such distances apart as tocorrespond with the length ofthe molds j', Which rest upon the belts andbetween the said bars. Of the two pulleys d, carrying each endless band,one thereof is constructed to revolve in the frame in which one of therolls G, before alluded to as adapted to subject the clay in the moldsto a heavy pressure, rotates, while the other one is merely a standfitted to hold the boxes g, in which the pulleyspindle rests. Thedesired tension of the endless bands is obtained bythe adjustment of theset-screws h, which bear against the spindle-boxes g. A portion of theendless bands below the bed-plate D is supported in a straight line by asystem of rollers, g', in a frame secured to the foundation of themachine. The molds, When receiving the clay, are thus held to the underside of' the hed-plate without placing an undue strain upon the belts.The endless bands are operated separately, by means of the belts H andpulleys I, or by chains, in combination with chain-wheels, as may befound most satisfactory in operation.

Parts of the invention not yet alluded to will be fully described, andtheir uses and Offices set forth, in the description ofthe operation ofour improved brick-machine, which follows: The machine having beenplaced in motion, one of the molds f, consisting of a box divided intocompartments corresponding in size to that ofthe bricks to be made, andfurnished with a loose bottom board,f, to which it is connected by hooksand staples, or other equivalent device, is placed upon the exposed endof each of the endless bands F. During this operation, tempered clay isthrown into the clay-cylinder A, Where it is disintegrated and mixed bythe cutters C, and forced through the feed-apertures K in the hed-plateD, to the molds j", by the revolving spiral wings L, secured to theshaft B, near to the bottom ot' the cylinder. The filled molds arefinally conducted to the rolls G, under whichthey pass, the clay beingthereby compressed and increased in density. As the molds issue frombeneath the rolls, the superfluous clay projecting above the said moldsis planed off by the hinged knives M. The knives M are provided withWeighted levers N, to give them the necessary stability in the planingoperation.

In the manufacture of bricks by means of our improved machine, clay maybe used of a consistency about the same as that usually employed inmaking bricks by hand, as the bricks are removed from the machine to thedrying-door, in the molds, and are not subjected to direct handling.This advantage will be readily understood by practical brickmakers. Thebricks may also be made with sanded sides, which tend to heighten theircolor and enhance their value.

Having thus described our invention, what We claim as new, and Wish tosecure by Letters Patent of the United States, is-

1. The clay-cylinder A, shaft B, cutters C, and spiral wings L, combinedwith the perfo- JOSEPH o.' SEYMOUR. SAMUEL G. DAVIS. Witnesses:

J. M. MYERS, W. W. WHARTON.

